Hiace preheating lamp issue

Hi, I have a 2009 Toyota Hiace with a diesel engine and I'm experiencing some issues. The preheating lamp doesn't switch off, the check engine light is on, and there's smoke when I accelerate. I ran a diagnostic test and it's showing a defective glow control unit. I checked the cable and plug connection, but everything seems fine. Mileage is at 173150 km. Any ideas?

4 comment(s)

I had a similar problem with my Hiace a while back. Same symptoms: engine light, preheating issues. Did the diagnostic test point to the control unit itself or just a general error code?

The diagnostic test specifically mentioned the glow control unit. I am not sure about an error code, but the mechanic did mention something about it. Did you replace yours or was there something else?

Okay, mine turned out to be a faulty connection within the control unit itself. I tried cleaning it, but no luck. Ended up needing a new one. If the connections outside look good, it might be worth taking it to a workshop.

Thanks for the advice. Turns out you were right. I took it to a mechanic. They confirmed it was the control unit. The cable or plug connection was defective as initially suspected. Repair cost me 95€. All good now.

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